EFFECT OF LAPAROTOMY ON LUNG VOLUME. DEMONSTRATION OF A NEW TYPE OF PULMONARY COLLAPSE

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Abstract
Christie''s method for measuring residual air has been applied successfully to a clinical problem. Following laparotomy there is an absolute decrease in lung volume of 20%. This is attained on the 4th day after the operation. The lungs regain their normal volume in 2 weeks. Reasons are given for believing that this shrinkage is due to a type of diffuse, partial collapse of the lungs not heretofore demonstrated. It occurs following 83% of laparotomies. Crippling of the respiratory mechanics indicated by decrease of vital capacity precedes the development of this diffuse type of collapse.

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